These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.53 s (backtrack: 0/20).

[ebuild     U  ] dev-build/libtool-2.6.2:2::gentoo [2.5.4:2::gentoo] USE="-vanilla -verify-sig%" 1068 KiB

Total: 1 package (1 upgrade), Size of downloads: 1068 KiB